Crosshead adjuster



ug- 23, 1932- T. RoGATcHoFF 1,873,483

CROSSHEAD ADJUSTER Filed July 5. 1930 Patented Aug. 23, 1932m'riinozoona aoGAfroHorF, or BALTIMORBMARYLAND oRossHEAD' ADJUSTEBI.ApplicationV filed July 3, 1930. Serial No. 465,771;

This said invention relates to an adjustment for crossheads.

An object of the invention is to provide means for adjusting the shoerelative to the body of the crosshead to compensate for the wear betweenthe shoe and the crosshead guides. i

A further object is to provide a simple and convenient means for takingup the wear between the shoe and guides and also in means which may bereleased for is shown at l and the for retaining the wear compensatingmeans in adjusted position.

Another object is to provide a U-shaped wedge for insertion between theflanges of the crosshead and the shoe and in means for clamping thewedge against the shoe to hold the wedge in any adjusted position.

Referring to the drawing which is made a part of this application and inwhich similar reference characters indicate similar parts, A

Fig. lis a view of a conventional crosshead shown in side elevation withthe adjusting mechanism in position, Y

Fig. 2 shows a section on Fig. l,

Fig. 3 is a view in elevation ofthe construction shown in Fig. l as seenfrom the right,

Fig. 4 is a perspective view of the adjusting wedge, and v Fig. is adetail view of the clamp for clamping the wedge against the shoe.

In the drawing the body of the crosshead adjustable shoe at 2. In Fig. 2the upper portion of the shoe is shown as provided with grooves 3 forthe reception of the bolts Il for clamping the side flanges 7 and 8 ofthe crosshead against the flanges 9 and l0 of the shoe. These flangesare clamped by means of nuts 5 on the bolts the purpose of driving inthe wedge to compensate for wear between the shoe and the crossheadguides.

As will be apparent from the drawing the shoe has on its upper surfacetwo plane surfaces parallel to the base of the shoe upon which the lowersurface of the wedge is adapted to rest. The flanges of the crossheadare inclined at the same angle as the upper surfaces of the wedge sothat whenthe the line 2-2 of vwedge is .driven in ,to compensate for ioutside wallsof the of the shoe upon which the wedge rests.

Qev'ent it should become loose.

`flange 9 on the'V shoe.y

the crossheadwillbe lifted vertically. The

y anges 9 and 10 are arranged at right anglesto the planesurfacestapered legs of the wedge are rectangular in cross section at allvpoints and v'fit closely They yclamp 1l is provided with an opening toreceive the bolt shown at j projection l2 for engagement with thecorresponding hole inthe crosshead ange 9 to prevent turning of theclamp upon the bolt. The clamp Vis also cut away on its innerv Ycated atw14 so thatits l p lower inner Yface may clamp tightly against the sideof the wedge without binding on its for the wedge in the In casel thewedge becomes loose for any reason and tends to slip outwardly Vthe lug13 will engage: the

provide a safety .stop

A edge of the clamp, 11 and be stopped thereby.

In'malring the adjustment the nuts 5 are loosened-and the wedge drivenin by hammer blows or. byy other means until the wear is .taken up afterwhichA the `1 nuts are again tightened. It will be observed that whenthe ,nut onthegbolt shown at .is tightened the .will engagethe tion Vof`the innerl face of theclainp will make the right of 2 upper end oftheclamp 'l1 flange 7 and the'lower porcontact withV the outer. side of thewedge and hold the wedge tightly between it and the This clamping actionThe the right infFig. 2" and is also provided with a lug or against theouter walls of the flanges 9 and 10. v i j V face as indi- `3615 y lowerportion against the lower edge of the crosshead flange 7 The 'wedge 6.is also provided with a lugl` tolle will 'effectively retain the wedgein any adv justed position. This means of adjustment whereby a planetapered wedge isl held by means of a clamp engaging the plane side walladmits of a very ne ydegree of adjustment. Devices of a somewhat similarnature are old in the art ne adjustment which can be obtained by thisinvention. the wedge aganist the outer wall of the flange 9 provides avery simple and effective means for retaining the wedge in any adjustedposition.

but are not capable of the I Furthermore the clamping ofV All of theContact surfaces between.

inner flange against 85. wedgeto clamp the same against said flange,

same plane',` the inner the wedge, the shoe and the crosshead arecarefully machined to provide the best contact possible.

Having thus fully described my said invention, what I claim as new anddesire to secure by Letters Patent is 1. A crosshead adjuster comprisingin combination with'a shoe and crosshead, of a U-shaped wedge havinglegs inclined to the gaging flanges on said shoe land 'a clamping membercarried by said crosshead vand engaging the smooth outer side of saidwedge to clamp it against one of said flanges;

2. A crosshead adjuster comprising in Y combination with acrosshead andshoe,l of a vwedge designed to rest onsaid shoe and have its upperinclined .surface in engagement with a complementary lowerrinclinedVsurface on said crosshead, said shoe provided with an `inner flangeagainst which said crosshead is clamped,y and a clamp carried by saidcrosshead and engaging the smooth side wall of said wedge to clamp thesame against said flange. Y

v3. crosshead adjuster; comprising in Ycombination with a crosshead'andshoe, of a rwedge designed to rest on said shoe and have lits upperinclined surface in engagement with a complementary lower inclinedsurface on shoe provided with an which said cr'osshead is saidcrosshead, said clamped, a clampcarried by said crosshead and engagingthe smooth sidewall of said and a lug on the side wall of said wedge toengage said cla-mp to prevent'escape of the wedge. f

j 4. A crosshead adjuster comprising in Y f combinationjashoe lhaving aplane bearing y surface and a flange perpendicular to said bearingsurface, a crosshead having a depending wall clamped againstthe side ofsaid liange, and a wedge rectangular in crossy section andV having planevertical sides for adjusting said wall with respect to the upper surfaceof said shoe anda clampV carried by said cross head and having'a planeclamping face for clamping said wedge against the side wall of saidflange..k

VIn testimony whereof I aiiix my signature.

THEODORE ROGATCHOFF.

sides of said legs, en

